The SQ will change with Amplification / Pre choices and a good Phase /
Impedance will help to give a Coherent Presentation, with a well balanced load to drive.
For example an even 8 ohm (Tube Amp using 8 ohm tap) load will let the Amp work exceedingly well.
Someone here may have some input as to the NAD / Silver 8 combo.
Another more general suggestion would be add / subtract one component at a time and evaluate the differences for yourself, so as to not induce multiples of quality and quantity making evaluation more difficult.
Impedance will help to give a Coherent Presentation, with a well balanced load to drive.
For example an even 8 ohm (Tube Amp using 8 ohm tap) load will let the Amp work exceedingly well.
Someone here may have some input as to the NAD / Silver 8 combo.
Another more general suggestion would be add / subtract one component at a time and evaluate the differences for yourself, so as to not induce multiples of quality and quantity making evaluation more difficult.